During the Baroque period, the art of music developed rapidly. And contributed to the rise of Rococo art later. The music of this period is most representative in Germany, Italy and France. Opera, a great art form, was born in the "cradle of music"-Italy, an ancient European civilization. In Florence at that time, there were many great artists and a group of nobles who were very interested in ancient Greek art. Determined to give new life to Greek drama, these nobles began to compose music for ancient Greek stories, and the chorus put on costumes to sing the whole story, which was the embryonic form of opera. Later, the roles in the story were played by singers; Between chorus programs, male and female singers are soloists respectively. When the character's words are soft, the lines are treated as half-singing and half-speaking, which is like a hymn and is called recitative; And strong feelings are expressed by real melody, which is called aria. Then, arias were specially used to show off the singer's beautiful timbre. At that time, whether an opera was performed in Italy, Britain or Germany, its aria was always sung in Italian, while the recitative part was sung in its own language. In Italian baroque music, there are strings that can be compared with early operas. At that time, the ancient overtures and concertos of operas were mainly strings. In this period, Italy was rich in violinists, such as Giuseppe Torelli (165-178), Caulery (1653-1713), Vitali (T.Antonio Vitali, 1665-1735) and Vivaldi (P >. These musicians are not only famous violin players, but also composers of violin music. Among the Cremona in the northern Italian Alps, violin makers can be described as endless, such as Amati, Guanelli and Stradivali. Their elaborate violins are still active on the stage, showing endless artistic charm. The overture of opera must be divided into three parts: quick start, slow middle part and quick end, which later became the basic form of concerto and symphony. String instruments such as violin, viola, cello and double bass are still indispensable instruments in the orchestra, and they are also extremely important chamber music and solo instruments. It can be seen that Italian music in Baroque era has a far-reaching influence. At that time, in Paris, France, opera and clavichord music were very popular in the palaces of various princes and nobles. French opera in this period grew independently from the tradition of Italian opera, and was close to the form of ballet. In the Baroque era, the most representative opera composer in France was Jean Baptiste Lully (1632-1687), whose operas were concise, clear, melodious, and at the same time, with strong dance. Its content is spicy, humorous and incisive. At the same time as opera, clavichord music prevailed. The ancient piano is often decorated with baroque culture, which is the predecessor of modern piano with harpsichord. At that time, there were coupland (1668-1733) and J.P.Jean Philippe Rameau (1683-1764) in ancient piano master. They wrote many suites for ancient piano scores, many of which are still widely circulated today. Introduction to Harmony Acoustics (by Ramo), published in 1722, is the earliest work on harmony acoustics theory in the history of music.